1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright 1990, 91, 92, 93, 94, 1995 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 Most of this hacked by Steve Chamberlain,
30 BFD supports a number of different flavours of coff format.
31 The major differences between formats are the sizes and
32 alignments of fields in structures on disk, and the occasional
35 Coff in all its varieties is implemented with a few common
36 files and a number of implementation specific files. For
37 example, The 88k bcs coff format is implemented in the file
38 @file{coff-m88k.c}. This file @code{#include}s
39 @file{coff/m88k.h} which defines the external structure of the
40 coff format for the 88k, and @file{coff/internal.h} which
41 defines the internal structure. @file{coff-m88k.c} also
42 defines the relocations used by the 88k format
45 The Intel i960 processor version of coff is implemented in
46 @file{coff-i960.c}. This file has the same structure as
47 @file{coff-m88k.c}, except that it includes @file{coff/i960.h}
48 rather than @file{coff-m88k.h}.
51 Porting to a new version of coff
53 The recommended method is to select from the existing
54 implementations the version of coff which is most like the one
55 you want to use. For example, we'll say that i386 coff is
56 the one you select, and that your coff flavour is called foo.
57 Copy @file{i386coff.c} to @file{foocoff.c}, copy
58 @file{../include/coff/i386.h} to @file{../include/coff/foo.h},
59 and add the lines to @file{targets.c} and @file{Makefile.in}
60 so that your new back end is used. Alter the shapes of the
61 structures in @file{../include/coff/foo.h} so that they match
62 what you need. You will probably also have to add
63 @code{#ifdef}s to the code in @file{coff/internal.h} and
64 @file{coffcode.h} if your version of coff is too wild.
66 You can verify that your new BFD backend works quite simply by
67 building @file{objdump} from the @file{binutils} directory,
68 and making sure that its version of what's going on and your
69 host system's idea (assuming it has the pretty standard coff
70 dump utility, usually called @code{att-dump} or just
71 @code{dump}) are the same. Then clean up your code, and send
72 what you've done to Cygnus. Then your stuff will be in the
73 next release, and you won't have to keep integrating it.
76 How the coff backend works
81 The Coff backend is split into generic routines that are
82 applicable to any Coff target and routines that are specific
83 to a particular target. The target-specific routines are
84 further split into ones which are basically the same for all
85 Coff targets except that they use the external symbol format
86 or use different values for certain constants.
88 The generic routines are in @file{coffgen.c}. These routines
89 work for any Coff target. They use some hooks into the target
90 specific code; the hooks are in a @code{bfd_coff_backend_data}
91 structure, one of which exists for each target.
93 The essentially similar target-specific routines are in
94 @file{coffcode.h}. This header file includes executable C code.
95 The various Coff targets first include the appropriate Coff
96 header file, make any special defines that are needed, and
97 then include @file{coffcode.h}.
99 Some of the Coff targets then also have additional routines in
100 the target source file itself.
102 For example, @file{coff-i960.c} includes
103 @file{coff/internal.h} and @file{coff/i960.h}. It then
104 defines a few constants, such as @code{I960}, and includes
105 @file{coffcode.h}. Since the i960 has complex relocation
106 types, @file{coff-i960.c} also includes some code to
107 manipulate the i960 relocs. This code is not in
108 @file{coffcode.h} because it would not be used by any other
114 Each flavour of coff supported in BFD has its own header file
115 describing the external layout of the structures. There is also
116 an internal description of the coff layout, in
117 @file{coff/internal.h}. A major function of the
118 coff backend is swapping the bytes and twiddling the bits to
119 translate the external form of the structures into the normal
120 internal form. This is all performed in the
121 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
122 elements are different sizes between different versions of
123 coff; it is the duty of the coff version specific include file
124 to override the definitions of various packing routines in
125 @file{coffcode.h}. E.g., the size of line number entry in coff is
126 sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
127 @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
128 correct one. No doubt, some day someone will find a version of
129 coff which has a varying field size not catered to at the
130 moment. To port BFD, that person will have to add more @code{#defines}.
131 Three of the bit twiddling routines are exported to
132 @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
133 and @code{coff_swap_linno_in}. @code{GDB} reads the symbol
134 table on its own, but uses BFD to fix things up. More of the
135 bit twiddlers are exported for @code{gas};
136 @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
137 @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
138 @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
139 @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
140 of all the symbol table and reloc drudgery itself, thereby
141 saving the internal BFD overhead, but uses BFD to swap things
142 on the way out, making cross ports much safer. Doing so also
143 allows BFD (and thus the linker) to use the same header files
144 as @code{gas}, which makes one avenue to disaster disappear.
149 The simple canonical form for symbols used by BFD is not rich
150 enough to keep all the information available in a coff symbol
151 table. The back end gets around this problem by keeping the original
152 symbol table around, "behind the scenes".
154 When a symbol table is requested (through a call to
155 @code{bfd_canonicalize_symtab}), a request gets through to
156 @code{coff_get_normalized_symtab}. This reads the symbol table from
157 the coff file and swaps all the structures inside into the
158 internal form. It also fixes up all the pointers in the table
159 (represented in the file by offsets from the first symbol in
160 the table) into physical pointers to elements in the new
161 internal table. This involves some work since the meanings of
162 fields change depending upon context: a field that is a
163 pointer to another structure in the symbol table at one moment
164 may be the size in bytes of a structure at the next. Another
165 pass is made over the table. All symbols which mark file names
166 (<<C_FILE>> symbols) are modified so that the internal
167 string points to the value in the auxent (the real filename)
168 rather than the normal text associated with the symbol
171 At this time the symbol names are moved around. Coff stores
172 all symbols less than nine characters long physically
173 within the symbol table; longer strings are kept at the end of
174 the file in the string table. This pass moves all strings
175 into memory and replaces them with pointers to the strings.
178 The symbol table is massaged once again, this time to create
179 the canonical table used by the BFD application. Each symbol
180 is inspected in turn, and a decision made (using the
181 @code{sclass} field) about the various flags to set in the
182 @code{asymbol}. @xref{Symbols}. The generated canonical table
183 shares strings with the hidden internal symbol table.
185 Any linenumbers are read from the coff file too, and attached
186 to the symbols which own the functions the linenumbers belong to.
191 Writing a symbol to a coff file which didn't come from a coff
192 file will lose any debugging information. The @code{asymbol}
193 structure remembers the BFD from which the symbol was taken, and on
194 output the back end makes sure that the same destination target as
195 source target is present.
197 When the symbols have come from a coff file then all the
198 debugging information is preserved.
200 Symbol tables are provided for writing to the back end in a
201 vector of pointers to pointers. This allows applications like
202 the linker to accumulate and output large symbol tables
203 without having to do too much byte copying.
205 This function runs through the provided symbol table and
206 patches each symbol marked as a file place holder
207 (@code{C_FILE}) to point to the next file place holder in the
208 list. It also marks each @code{offset} field in the list with
209 the offset from the first symbol of the current symbol.
211 Another function of this procedure is to turn the canonical
212 value form of BFD into the form used by coff. Internally, BFD
213 expects symbol values to be offsets from a section base; so a
214 symbol physically at 0x120, but in a section starting at
215 0x100, would have the value 0x20. Coff expects symbols to
216 contain their final value, so symbols have their values
217 changed at this point to reflect their sum with their owning
218 section. This transformation uses the
219 <<output_section>> field of the @code{asymbol}'s
220 @code{asection} @xref{Sections}.
222 o <<coff_mangle_symbols>>
224 This routine runs though the provided symbol table and uses
225 the offsets generated by the previous pass and the pointers
226 generated when the symbol table was read in to create the
227 structured hierachy required by coff. It changes each pointer
228 to a symbol into the index into the symbol table of the asymbol.
230 o <<coff_write_symbols>>
232 This routine runs through the symbol table and patches up the
233 symbols from their internal form into the coff way, calls the
234 bit twiddlers, and writes out the table to the file.
243 The hidden information for an <<asymbol>> is described in a
244 <<combined_entry_type>>:
248 .typedef struct coff_ptr_struct
251 . {* Remembers the offset from the first symbol in the file for
252 . this symbol. Generated by coff_renumber_symbols. *}
253 .unsigned int offset;
255 . {* Should the value of this symbol be renumbered. Used for
256 . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *}
257 .unsigned int fix_value : 1;
259 . {* Should the tag field of this symbol be renumbered.
260 . Created by coff_pointerize_aux. *}
261 .unsigned int fix_tag : 1;
263 . {* Should the endidx field of this symbol be renumbered.
264 . Created by coff_pointerize_aux. *}
265 .unsigned int fix_end : 1;
267 . {* Should the x_csect.x_scnlen field be renumbered.
268 . Created by coff_pointerize_aux. *}
269 .unsigned int fix_scnlen : 1;
271 . {* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
272 . index into the line number entries. Set by
273 . coff_slurp_symbol_table. *}
274 .unsigned int fix_line : 1;
276 . {* The container for the symbol structure as read and translated
280 . union internal_auxent auxent;
281 . struct internal_syment syment;
283 .} combined_entry_type;
286 .{* Each canonical asymbol really looks like this: *}
288 .typedef struct coff_symbol_struct
290 . {* The actual symbol which the rest of BFD works with *}
293 . {* A pointer to the hidden information for this symbol *}
294 .combined_entry_type *native;
296 . {* A pointer to the linenumber information for this symbol *}
297 .struct lineno_cache_entry *lineno;
299 . {* Have the line numbers been relocated yet ? *}
300 .boolean done_lineno;
309 #include "coffswap.h"
313 /* void warning(); */
316 * Return a word with STYP_* (scnhdr.s_flags) flags set to represent the
317 * incoming SEC_* flags. The inverse of this function is styp_to_sec_flags().
318 * NOTE: If you add to/change this routine, you should mirror the changes
319 * in styp_to_sec_flags().
322 sec_to_styp_flags (sec_name, sec_flags)
323 CONST char *sec_name;
328 if (!strcmp (sec_name, _TEXT))
330 styp_flags = STYP_TEXT;
332 else if (!strcmp (sec_name, _DATA))
334 styp_flags = STYP_DATA;
336 else if (!strcmp (sec_name, _BSS))
338 styp_flags = STYP_BSS;
341 else if (!strcmp (sec_name, _COMMENT))
343 styp_flags = STYP_INFO;
344 #endif /* _COMMENT */
347 else if (!strcmp (sec_name, _LIB))
349 styp_flags = STYP_LIB;
353 else if (!strcmp (sec_name, _LIT))
355 styp_flags = STYP_LIT;
358 else if (!strcmp (sec_name, ".debug"))
361 styp_flags = STYP_DEBUG;
363 styp_flags = STYP_INFO;
366 else if (!strncmp (sec_name, ".stab", 5))
368 styp_flags = STYP_INFO;
371 else if (!strcmp (sec_name, ".edata"))
373 styp_flags = STYP_DATA;
377 else if (!strcmp (sec_name, _PAD))
379 styp_flags = STYP_PAD;
381 else if (!strcmp (sec_name, _LOADER))
383 styp_flags = STYP_LOADER;
386 /* Try and figure out what it should be */
387 else if (sec_flags & SEC_CODE)
389 styp_flags = STYP_TEXT;
391 else if (sec_flags & SEC_DATA)
393 styp_flags = STYP_DATA;
395 else if (sec_flags & SEC_READONLY)
397 #ifdef STYP_LIT /* 29k readonly text/data section */
398 styp_flags = STYP_LIT;
400 styp_flags = STYP_TEXT;
401 #endif /* STYP_LIT */
403 else if (sec_flags & SEC_LOAD)
405 styp_flags = STYP_TEXT;
407 else if (sec_flags & SEC_ALLOC)
409 styp_flags = STYP_BSS;
413 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
414 styp_flags |= STYP_NOLOAD;
420 * Return a word with SEC_* flags set to represent the incoming
421 * STYP_* flags (from scnhdr.s_flags). The inverse of this
422 * function is sec_to_styp_flags().
423 * NOTE: If you add to/change this routine, you should mirror the changes
424 * in sec_to_styp_flags().
427 styp_to_sec_flags (abfd, hdr, name)
432 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
433 long styp_flags = internal_s->s_flags;
434 flagword sec_flags = 0;
437 if (styp_flags & STYP_NOLOAD)
439 sec_flags |= SEC_NEVER_LOAD;
441 #endif /* STYP_NOLOAD */
443 /* For 386 COFF, at least, an unloadable text or data section is
444 actually a shared library section. */
445 if (styp_flags & STYP_TEXT)
447 if (sec_flags & SEC_NEVER_LOAD)
448 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
450 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
452 else if (styp_flags & STYP_DATA)
454 if (sec_flags & SEC_NEVER_LOAD)
455 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
457 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
459 else if (styp_flags & STYP_BSS)
461 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
462 if (sec_flags & SEC_NEVER_LOAD)
463 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
466 sec_flags |= SEC_ALLOC;
468 else if (styp_flags & STYP_INFO)
470 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
471 defined. coff_compute_section_file_positions uses
472 COFF_PAGE_SIZE to ensure that the low order bits of the
473 section VMA and the file offset match. If we don't know
474 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
475 and demand page loading of the file will fail. */
476 #ifdef COFF_PAGE_SIZE
477 sec_flags |= SEC_DEBUGGING;
480 else if (styp_flags & STYP_PAD)
484 else if (strcmp (name, _TEXT) == 0)
486 if (sec_flags & SEC_NEVER_LOAD)
487 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
489 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
491 else if (strcmp (name, _DATA) == 0)
493 if (sec_flags & SEC_NEVER_LOAD)
494 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
496 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
498 else if (strcmp (name, _BSS) == 0)
500 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
501 if (sec_flags & SEC_NEVER_LOAD)
502 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
505 sec_flags |= SEC_ALLOC;
507 else if (strcmp (name, ".debug") == 0
509 || strcmp (name, _COMMENT) == 0
511 || strncmp (name, ".stab", 5) == 0)
513 #ifdef COFF_PAGE_SIZE
514 sec_flags |= SEC_DEBUGGING;
518 else if (strcmp (name, _LIB) == 0)
522 else if (strcmp (name, _LIT) == 0)
524 sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY;
529 sec_flags |= SEC_ALLOC | SEC_LOAD;
532 #ifdef STYP_LIT /* A29k readonly text/data section type */
533 if ((styp_flags & STYP_LIT) == STYP_LIT)
535 sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
537 #endif /* STYP_LIT */
538 #ifdef STYP_OTHER_LOAD /* Other loaded sections */
539 if (styp_flags & STYP_OTHER_LOAD)
541 sec_flags = (SEC_LOAD | SEC_ALLOC);
543 #endif /* STYP_SDATA */
548 #define get_index(symbol) ((symbol)->udata.i)
552 bfd_coff_backend_data
556 Special entry points for gdb to swap in coff symbol table parts:
559 . void (*_bfd_coff_swap_aux_in) PARAMS ((
568 . void (*_bfd_coff_swap_sym_in) PARAMS ((
573 . void (*_bfd_coff_swap_lineno_in) PARAMS ((
579 Special entry points for gas to swap out coff parts:
581 . unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
590 . unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
595 . unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
600 . unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
605 . unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
610 . unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
615 . unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
621 Special entry points for generic COFF routines to call target
622 dependent COFF routines:
624 . unsigned int _bfd_filhsz;
625 . unsigned int _bfd_aoutsz;
626 . unsigned int _bfd_scnhsz;
627 . unsigned int _bfd_symesz;
628 . unsigned int _bfd_auxesz;
629 . unsigned int _bfd_relsz;
630 . unsigned int _bfd_linesz;
631 . boolean _bfd_coff_long_filenames;
632 . void (*_bfd_coff_swap_filehdr_in) PARAMS ((
636 . void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
640 . void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
644 . void (*_bfd_coff_swap_reloc_in) PARAMS ((
648 . boolean (*_bfd_coff_bad_format_hook) PARAMS ((
650 . PTR internal_filehdr));
651 . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
653 . PTR internal_filehdr));
654 . PTR (*_bfd_coff_mkobject_hook) PARAMS ((
656 . PTR internal_filehdr,
657 . PTR internal_aouthdr));
658 . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
660 . PTR internal_scnhdr,
661 . const char *name));
662 . void (*_bfd_set_alignment_hook) PARAMS ((
665 . PTR internal_scnhdr));
666 . boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
668 . boolean (*_bfd_coff_symname_in_debug) PARAMS ((
670 . struct internal_syment *sym));
671 . boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
673 . combined_entry_type *table_base,
674 . combined_entry_type *symbol,
675 . unsigned int indaux,
676 . combined_entry_type *aux));
677 . boolean (*_bfd_coff_print_aux) PARAMS ((
680 . combined_entry_type *table_base,
681 . combined_entry_type *symbol,
682 . combined_entry_type *aux,
683 . unsigned int indaux));
684 . void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
686 . struct bfd_link_info *link_info,
687 . struct bfd_link_order *link_order,
690 . unsigned int *src_ptr,
691 . unsigned int *dst_ptr));
692 . int (*_bfd_coff_reloc16_estimate) PARAMS ((
694 . asection *input_section,
696 . unsigned int shrink,
697 . struct bfd_link_info *link_info));
698 . boolean (*_bfd_coff_sym_is_global) PARAMS ((
700 . struct internal_syment *));
701 . void (*_bfd_coff_compute_section_file_positions) PARAMS ((
703 . boolean (*_bfd_coff_start_final_link) PARAMS ((
705 . struct bfd_link_info *info));
706 . boolean (*_bfd_coff_relocate_section) PARAMS ((
708 . struct bfd_link_info *info,
710 . asection *input_section,
711 . bfd_byte *contents,
712 . struct internal_reloc *relocs,
713 . struct internal_syment *syms,
714 . asection **sections));
715 . reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
718 . struct internal_reloc *rel,
719 . struct coff_link_hash_entry *h,
720 . struct internal_syment *sym,
721 . bfd_vma *addendp));
722 . boolean (*_bfd_coff_adjust_symndx) PARAMS ((
724 . struct bfd_link_info *info,
727 . struct internal_reloc *reloc,
728 . boolean *adjustedp));
730 .} bfd_coff_backend_data;
732 .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
734 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
735 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
737 .#define bfd_coff_swap_sym_in(a,e,i) \
738 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
740 .#define bfd_coff_swap_lineno_in(a,e,i) \
741 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
743 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
744 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
746 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
747 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
749 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
750 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
752 .#define bfd_coff_swap_sym_out(abfd, i,o) \
753 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
755 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
756 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
758 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
759 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
761 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
762 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
764 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
765 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
766 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
767 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
768 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
769 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
770 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
771 .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
772 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
773 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
775 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
776 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
778 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
779 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
781 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
782 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
784 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
785 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
787 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
788 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
789 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
790 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
792 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
793 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
795 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
796 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
798 .#define bfd_coff_slurp_symbol_table(abfd)\
799 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
801 .#define bfd_coff_symname_in_debug(abfd, sym)\
802 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
804 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
805 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
806 . (abfd, file, base, symbol, aux, indaux))
808 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
809 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
810 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
812 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
813 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
814 . (abfd, section, reloc, shrink, link_info))
816 .#define bfd_coff_sym_is_global(abfd, sym)\
817 . ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
820 .#define bfd_coff_compute_section_file_positions(abfd)\
821 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
824 .#define bfd_coff_start_final_link(obfd, info)\
825 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
827 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
828 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
829 . (obfd, info, ibfd, o, con, rel, isyms, secs))
830 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
831 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
832 . (abfd, sec, rel, h, sym, addendp))
833 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
834 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
835 . (obfd, info, ibfd, sec, rel, adjustedp))
839 /* See whether the magic number matches. */
842 coff_bad_format_hook (abfd, filehdr)
846 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
848 if (BADMAG (*internal_f))
851 /* if the optional header is NULL or not the correct size then
852 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
853 and Intel 960 readwrite headers (I960WRMAGIC) is that the
854 optional header is of a different size.
856 But the mips keeps extra stuff in it's opthdr, so dont check
860 #if defined(M88) || defined(I960)
861 if (internal_f->f_opthdr != 0 && AOUTSZ != internal_f->f_opthdr)
869 initialize a section structure with information peculiar to this
870 particular implementation of coff
874 coff_new_section_hook (abfd, section)
878 section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
881 if (xcoff_data (abfd)->text_align_power != 0
882 && strcmp (bfd_get_section_name (abfd, section), ".text") == 0)
883 section->alignment_power = xcoff_data (abfd)->text_align_power;
884 if (xcoff_data (abfd)->data_align_power != 0
885 && strcmp (bfd_get_section_name (abfd, section), ".data") == 0)
886 section->alignment_power = xcoff_data (abfd)->data_align_power;
889 /* Allocate aux records for section symbols, to store size and
892 @@ Shouldn't use constant multiplier here! */
893 coffsymbol (section->symbol)->native =
894 (combined_entry_type *) bfd_zalloc (abfd,
895 sizeof (combined_entry_type) * 10);
897 /* The .stab section must be aligned to 2**2 at most, because
898 otherwise there may be gaps in the section which gdb will not
899 know how to interpret. Examining the section name is a hack, but
900 that is also how gdb locates the section.
901 We need to handle the .ctors and .dtors sections similarly, to
902 avoid introducing null words in the tables. */
903 if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER > 2
904 && (strncmp (section->name, ".stab", 5) == 0
905 || strcmp (section->name, ".ctors") == 0
906 || strcmp (section->name, ".dtors") == 0))
907 section->alignment_power = 2;
914 /* Set the alignment of a BFD section. */
917 coff_set_alignment_hook (abfd, section, scnhdr)
922 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
925 for (i = 0; i < 32; i++)
926 if ((1 << i) >= hdr->s_align)
928 section->alignment_power = i;
934 /* a couple of macros to help setting the alignment power field */
935 #define ALIGN_SET(field,x,y) \
936 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
938 section->alignment_power = y;\
941 #define ELIFALIGN_SET(field,x,y) \
942 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
944 section->alignment_power = y;\
948 coff_set_alignment_hook (abfd, section, scnhdr)
953 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
955 ALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_64BYTES, 6)
956 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_32BYTES, 5)
957 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_16BYTES, 4)
958 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_8BYTES, 3)
959 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_4BYTES, 2)
960 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_2BYTES, 1)
961 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_1BYTES, 0)
964 if (strcmp (section->name, ".idata$2") == 0)
966 fprintf(stderr, "Setting alignment for .idata$4\n");
967 section->alignment_power = 0;
969 else if (strcmp (section->name, ".idata$3") == 0)
971 fprintf(stderr, "Setting alignment for .idata$4\n");
972 section->alignment_power = 0;
974 else if (strcmp (section->name, ".idata$4") == 0)
976 fprintf(stderr, "Setting alignment for .idata$4\n");
977 section->alignment_power = 2;
979 else if (strcmp (section->name, ".idata$5") == 0)
981 fprintf(stderr, "Setting alignment for .idata$5\n");
982 section->alignment_power = 2;
984 else if (strcmp (section->name, ".idata$6") == 0)
986 fprintf(stderr, "Setting alignment for .idata$6\n");
987 section->alignment_power = 1;
994 #else /* ! COFF_WITH_PE */
997 /* We grossly abuse this function to handle XCOFF overflow headers.
998 When we see one, we correct the reloc and line number counts in the
999 real header, and remove the section we just created. */
1002 coff_set_alignment_hook (abfd, section, scnhdr)
1007 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1011 if ((hdr->s_flags & STYP_OVRFLO) == 0)
1014 real_sec = coff_section_from_bfd_index (abfd, hdr->s_nreloc);
1015 if (real_sec == NULL)
1018 real_sec->reloc_count = hdr->s_paddr;
1019 real_sec->lineno_count = hdr->s_vaddr;
1021 for (ps = &abfd->sections; *ps != NULL; ps = &(*ps)->next)
1026 --abfd->section_count;
1032 #else /* ! RS6000COFF_C */
1034 #define coff_set_alignment_hook \
1035 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1037 #endif /* ! RS6000COFF_C */
1038 #endif /* ! COFF_WITH_PE */
1041 #ifndef coff_mkobject
1043 coff_mkobject (abfd)
1046 coff_data_type *coff;
1048 abfd->tdata.coff_obj_data = (struct coff_tdata *) bfd_zalloc (abfd, sizeof (coff_data_type));
1049 if (abfd->tdata.coff_obj_data == 0)
1051 coff = coff_data (abfd);
1052 coff->symbols = (coff_symbol_type *) NULL;
1053 coff->conversion_table = (unsigned int *) NULL;
1054 coff->raw_syments = (struct coff_ptr_struct *) NULL;
1055 coff->relocbase = 0;
1056 coff->local_toc_sym_map = 0;
1058 /* make_abs_section(abfd);*/
1064 /* Create the COFF backend specific information. */
1065 #ifndef coff_mkobject_hook
1067 coff_mkobject_hook (abfd, filehdr, aouthdr)
1072 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1073 coff_data_type *coff;
1075 if (coff_mkobject (abfd) == false)
1078 coff = coff_data (abfd);
1080 coff->sym_filepos = internal_f->f_symptr;
1082 /* These members communicate important constants about the symbol
1083 table to GDB's symbol-reading code. These `constants'
1084 unfortunately vary among coff implementations... */
1085 coff->local_n_btmask = N_BTMASK;
1086 coff->local_n_btshft = N_BTSHFT;
1087 coff->local_n_tmask = N_TMASK;
1088 coff->local_n_tshift = N_TSHIFT;
1089 coff->local_symesz = SYMESZ;
1090 coff->local_auxesz = AUXESZ;
1091 coff->local_linesz = LINESZ;
1093 obj_raw_syment_count (abfd) =
1094 obj_conv_table_size (abfd) =
1095 internal_f->f_nsyms;
1098 if ((internal_f->f_flags & F_SHROBJ) != 0)
1099 abfd->flags |= DYNAMIC;
1100 if (aouthdr != NULL && internal_f->f_opthdr >= AOUTSZ)
1102 struct internal_aouthdr *internal_a =
1103 (struct internal_aouthdr *) aouthdr;
1104 struct xcoff_tdata *xcoff;
1106 xcoff = xcoff_data (abfd);
1107 xcoff->full_aouthdr = true;
1108 xcoff->toc = internal_a->o_toc;
1109 if (internal_a->o_sntoc == 0)
1110 xcoff->toc_section = NULL;
1112 xcoff->toc_section =
1113 coff_section_from_bfd_index (abfd, internal_a->o_sntoc);
1114 if (internal_a->o_snentry == 0)
1115 xcoff->entry_section = NULL;
1117 xcoff->entry_section =
1118 coff_section_from_bfd_index (abfd, internal_a->o_snentry);
1119 xcoff->text_align_power = internal_a->o_algntext;
1120 xcoff->data_align_power = internal_a->o_algndata;
1121 xcoff->modtype = internal_a->o_modtype;
1122 xcoff->cputype = internal_a->o_cputype;
1123 xcoff->maxdata = internal_a->o_maxdata;
1124 xcoff->maxstack = internal_a->o_maxstack;
1132 /* Determine the machine architecture and type. FIXME: This is target
1133 dependent because the magic numbers are defined in the target
1134 dependent header files. But there is no particular need for this.
1135 If the magic numbers were moved to a separate file, this function
1136 would be target independent and would also be much more successful
1137 at linking together COFF files for different architectures. */
1140 coff_set_arch_mach_hook (abfd, filehdr)
1145 enum bfd_architecture arch;
1146 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1149 switch (internal_f->f_magic)
1153 arch = bfd_arch_powerpc;
1154 machine = 0; /* what does this mean? (krk) */
1160 case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */
1161 case LYNXCOFFMAGIC: /* shadows the m68k Lynx number below, sigh */
1162 arch = bfd_arch_i386;
1166 #ifdef A29K_MAGIC_BIG
1167 case A29K_MAGIC_BIG:
1168 case A29K_MAGIC_LITTLE:
1169 arch = bfd_arch_a29k;
1175 arch = bfd_arch_arm;
1182 #ifdef MC68KBCSMAGIC
1185 #ifdef APOLLOM68KMAGIC
1186 case APOLLOM68KMAGIC:
1188 #ifdef LYNXCOFFMAGIC
1191 arch = bfd_arch_m68k;
1199 arch = bfd_arch_m88k;
1205 arch = bfd_arch_z8k;
1206 switch (internal_f->f_flags & F_MACHMASK)
1209 machine = bfd_mach_z8001;
1212 machine = bfd_mach_z8002;
1221 arch = bfd_arch_i860;
1228 arch = bfd_arch_i960;
1229 switch (F_I960TYPE & internal_f->f_flags)
1233 machine = bfd_mach_i960_core;
1236 machine = bfd_mach_i960_kb_sb;
1239 machine = bfd_mach_i960_mc;
1242 machine = bfd_mach_i960_xa;
1245 machine = bfd_mach_i960_ca;
1248 machine = bfd_mach_i960_ka_sa;
1250 /* start-sanitize-i960xl */
1252 machine = bfd_mach_i960_xl;
1254 /* end-sanitize-i960xl */
1267 if (xcoff_data (abfd)->cputype != -1)
1268 cputype = xcoff_data (abfd)->cputype & 0xff;
1271 /* We did not get a value from the a.out header. If the
1272 file has not been stripped, we may be able to get the
1273 architecture information from the first symbol, if it
1274 is a .file symbol. */
1275 if (obj_raw_syment_count (abfd) == 0)
1279 bfd_byte buf[SYMESZ];
1280 struct internal_syment sym;
1282 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1283 || bfd_read (buf, 1, SYMESZ, abfd) != SYMESZ)
1285 coff_swap_sym_in (abfd, (PTR) buf, (PTR) &sym);
1286 if (sym.n_sclass == C_FILE)
1287 cputype = sym.n_type & 0xff;
1293 /* FIXME: We don't handle all cases here. */
1299 /* PowerPC Macs use the same magic numbers as RS/6000
1300 (because that's how they were bootstrapped originally),
1301 but they are always PowerPC architecture. */
1302 arch = bfd_arch_powerpc;
1305 arch = bfd_arch_rs6000;
1307 #endif /* POWERMAC */
1311 arch = bfd_arch_powerpc;
1314 case 2: /* 64 bit PowerPC */
1315 arch = bfd_arch_powerpc;
1319 arch = bfd_arch_powerpc;
1323 arch = bfd_arch_rs6000;
1333 arch = bfd_arch_we32k;
1340 arch = bfd_arch_h8300;
1341 machine = bfd_mach_h8300;
1342 /* !! FIXME this probably isn't the right place for this */
1343 abfd->flags |= BFD_IS_RELAXABLE;
1349 arch = bfd_arch_h8300;
1350 machine = bfd_mach_h8300h;
1351 /* !! FIXME this probably isn't the right place for this */
1352 abfd->flags |= BFD_IS_RELAXABLE;
1356 #ifdef SH_ARCH_MAGIC_BIG
1357 case SH_ARCH_MAGIC_BIG:
1358 case SH_ARCH_MAGIC_LITTLE:
1366 arch = bfd_arch_h8500;
1373 #ifdef LYNXCOFFMAGIC
1376 arch = bfd_arch_sparc;
1381 default: /* Unreadable input file type */
1382 arch = bfd_arch_obscure;
1386 bfd_default_set_arch_mach (abfd, arch, machine);
1390 #ifdef SYMNAME_IN_DEBUG
1393 symname_in_debug_hook (abfd, sym)
1395 struct internal_syment *sym;
1397 return SYMNAME_IN_DEBUG (sym) ? true : false;
1402 #define symname_in_debug_hook \
1403 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
1409 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
1411 static boolean coff_pointerize_aux_hook
1412 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
1413 unsigned int, combined_entry_type *));
1417 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
1419 combined_entry_type *table_base;
1420 combined_entry_type *symbol;
1421 unsigned int indaux;
1422 combined_entry_type *aux;
1424 int class = symbol->u.syment.n_sclass;
1426 if ((class == C_EXT || class == C_HIDEXT)
1427 && indaux + 1 == symbol->u.syment.n_numaux)
1429 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
1431 aux->u.auxent.x_csect.x_scnlen.p =
1432 table_base + aux->u.auxent.x_csect.x_scnlen.l;
1433 aux->fix_scnlen = 1;
1436 /* Return true to indicate that the caller should not do any
1437 further work on this auxent. */
1441 /* Return false to indicate that this auxent should be handled by
1449 /* We don't want to pointerize bal entries. */
1451 static boolean coff_pointerize_aux_hook
1452 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
1453 unsigned int, combined_entry_type *));
1457 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
1459 combined_entry_type *table_base;
1460 combined_entry_type *symbol;
1461 unsigned int indaux;
1462 combined_entry_type *aux;
1464 /* Return true if we don't want to pointerize this aux entry, which
1465 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
1467 && (symbol->u.syment.n_sclass == C_LEAFPROC
1468 || symbol->u.syment.n_sclass == C_LEAFSTAT
1469 || symbol->u.syment.n_sclass == C_LEAFEXT));
1474 #define coff_pointerize_aux_hook 0
1477 #endif /* ! RS6000COFF_C */
1479 /* Print an aux entry. This returns true if it has printed it. */
1481 static boolean coff_print_aux
1482 PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
1483 combined_entry_type *, unsigned int));
1486 coff_print_aux (abfd, file, table_base, symbol, aux, indaux)
1489 combined_entry_type *table_base;
1490 combined_entry_type *symbol;
1491 combined_entry_type *aux;
1492 unsigned int indaux;
1495 if ((symbol->u.syment.n_sclass == C_EXT
1496 || symbol->u.syment.n_sclass == C_HIDEXT)
1497 && indaux + 1 == symbol->u.syment.n_numaux)
1499 /* This is a csect entry. */
1500 fprintf (file, "AUX ");
1501 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
1503 BFD_ASSERT (! aux->fix_scnlen);
1504 fprintf (file, "val %5ld", aux->u.auxent.x_csect.x_scnlen.l);
1508 fprintf (file, "indx ");
1509 if (! aux->fix_scnlen)
1510 fprintf (file, "%4ld", aux->u.auxent.x_csect.x_scnlen.l);
1512 fprintf (file, "%4ld",
1513 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
1516 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
1517 aux->u.auxent.x_csect.x_parmhash,
1518 (unsigned int) aux->u.auxent.x_csect.x_snhash,
1519 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
1520 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
1521 (unsigned int) aux->u.auxent.x_csect.x_smclas,
1522 aux->u.auxent.x_csect.x_stab,
1523 (unsigned int) aux->u.auxent.x_csect.x_snstab);
1528 /* Return false to indicate that no special action was taken. */
1536 To write relocations, the back end steps though the
1537 canonical relocation table and create an
1538 @code{internal_reloc}. The symbol index to use is removed from
1539 the @code{offset} field in the symbol table supplied. The
1540 address comes directly from the sum of the section base
1541 address and the relocation offset; the type is dug directly
1542 from the howto field. Then the @code{internal_reloc} is
1543 swapped into the shape of an @code{external_reloc} and written
1549 coff_write_relocs (abfd, first_undef)
1554 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
1557 struct external_reloc dst;
1559 arelent **p = s->orelocation;
1560 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
1562 for (i = 0; i < s->reloc_count; i++)
1564 struct internal_reloc n;
1566 memset ((PTR) & n, 0, sizeof (n));
1568 /* Now we've renumbered the symbols we know where the
1569 undefined symbols live in the table. Check the reloc
1570 entries for symbols who's output bfd isn't the right one.
1571 This is because the symbol was undefined (which means
1572 that all the pointers are never made to point to the same
1573 place). This is a bad thing,'cause the symbols attached
1574 to the output bfd are indexed, so that the relocation
1575 entries know which symbol index they point to. So we
1576 have to look up the output symbol here. */
1578 if (q->sym_ptr_ptr[0]->the_bfd != abfd)
1581 const char *sname = q->sym_ptr_ptr[0]->name;
1582 asymbol **outsyms = abfd->outsymbols;
1583 for (i = first_undef; outsyms[i]; i++)
1585 const char *intable = outsyms[i]->name;
1586 if (strcmp (intable, sname) == 0) {
1587 /* got a hit, so repoint the reloc */
1588 q->sym_ptr_ptr = outsyms + i;
1594 n.r_vaddr = q->address + s->vma;
1597 /* The 29k const/consth reloc pair is a real kludge. The consth
1598 part doesn't have a symbol; it has an offset. So rebuilt
1600 if (q->howto->type == R_IHCONST)
1601 n.r_symndx = q->addend;
1606 if (q->sym_ptr_ptr == bfd_abs_section_ptr->symbol_ptr_ptr)
1607 /* This is a relocation relative to the absolute symbol. */
1611 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
1612 /* Take notice if the symbol reloc points to a symbol
1613 we don't have in our symbol table. What should we
1615 if (n.r_symndx > obj_conv_table_size (abfd))
1620 #ifdef SWAP_OUT_RELOC_OFFSET
1621 n.r_offset = q->addend;
1625 /* Work out reloc type from what is required */
1626 SELECT_RELOC (n, q->howto);
1628 n.r_type = q->howto->type;
1630 coff_swap_reloc_out (abfd, &n, &dst);
1631 if (bfd_write ((PTR) & dst, 1, RELSZ, abfd) != RELSZ)
1639 /* Set flags and magic number of a coff file from architecture and machine
1640 type. Result is true if we can represent the arch&type, false if not. */
1643 coff_set_flags (abfd, magicp, flagsp)
1646 unsigned short *flagsp;
1648 switch (bfd_get_arch (abfd))
1653 switch (bfd_get_mach (abfd))
1655 case bfd_mach_z8001:
1658 case bfd_mach_z8002:
1672 *magicp = I960ROMAGIC;
1674 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
1675 I960RWMAGIC); FIXME???
1677 switch (bfd_get_mach (abfd))
1679 case bfd_mach_i960_core:
1682 case bfd_mach_i960_kb_sb:
1685 case bfd_mach_i960_mc:
1688 case bfd_mach_i960_xa:
1691 case bfd_mach_i960_ca:
1694 case bfd_mach_i960_ka_sa:
1697 /* start-sanitize-i960xl */
1698 case bfd_mach_i960_xl:
1701 /* end-sanitize-i960xl */
1716 case bfd_arch_powerpc:
1723 *magicp = I386MAGIC;
1725 /* Just overwrite the usual value if we're doing Lynx. */
1726 *magicp = LYNXCOFFMAGIC;
1733 *magicp = I860MAGIC;
1739 #ifdef APOLLOM68KMAGIC
1740 *magicp = APOLLO_COFF_VERSION_NUMBER;
1742 *magicp = MC68MAGIC;
1745 /* Just overwrite the usual value if we're doing Lynx. */
1746 *magicp = LYNXCOFFMAGIC;
1754 *magicp = MC88OMAGIC;
1759 case bfd_arch_h8300:
1760 switch (bfd_get_mach (abfd))
1762 case bfd_mach_h8300:
1763 *magicp = H8300MAGIC;
1765 case bfd_mach_h8300h:
1766 *magicp = H8300HMAGIC;
1772 #ifdef SH_ARCH_MAGIC_BIG
1774 if (abfd->xvec->byteorder_big_p)
1775 *magicp = SH_ARCH_MAGIC_BIG;
1777 *magicp = SH_ARCH_MAGIC_LITTLE;
1783 case bfd_arch_sparc:
1784 *magicp = SPARCMAGIC;
1786 /* Just overwrite the usual value if we're doing Lynx. */
1787 *magicp = LYNXCOFFMAGIC;
1794 case bfd_arch_h8500:
1795 *magicp = H8500MAGIC;
1799 #ifdef A29K_MAGIC_BIG
1801 if (abfd->xvec->byteorder_big_p)
1802 *magicp = A29K_MAGIC_BIG;
1804 *magicp = A29K_MAGIC_LITTLE;
1810 case bfd_arch_we32k:
1811 *magicp = WE32KMAGIC;
1817 case bfd_arch_rs6000:
1819 case bfd_arch_powerpc:
1821 *magicp = U802TOCMAGIC;
1826 default: /* Unknown architecture */
1827 /* return false; -- fall through to "return false" below, to avoid
1828 "statement never reached" errors on the one below. */
1837 coff_set_arch_mach (abfd, arch, machine)
1839 enum bfd_architecture arch;
1840 unsigned long machine;
1843 unsigned short dummy2;
1845 if (! bfd_default_set_arch_mach (abfd, arch, machine))
1848 if (arch != bfd_arch_unknown &&
1849 coff_set_flags (abfd, &dummy1, &dummy2) != true)
1850 return false; /* We can't represent this type */
1852 return true; /* We're easy ... */
1856 /* Calculate the file position for each section. */
1859 coff_compute_section_file_positions (abfd)
1863 asection *previous = (asection *) NULL;
1864 file_ptr sofar = FILHSZ;
1872 /* On XCOFF, if we have symbols, set up the .debug section. */
1873 if (bfd_get_symcount (abfd) > 0)
1876 bfd_size_type i, symcount;
1880 symcount = bfd_get_symcount (abfd);
1881 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
1883 coff_symbol_type *cf;
1885 cf = coff_symbol_from (abfd, *symp);
1887 && cf->native != NULL
1888 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
1892 len = strlen (bfd_asymbol_name (*symp));
1901 dsec = bfd_make_section_old_way (abfd, ".debug");
1904 dsec->_raw_size = sz;
1905 dsec->flags |= SEC_HAS_CONTENTS;
1910 #ifdef COFF_IMAGE_WITH_PE
1912 if (coff_data (abfd)->link_info)
1914 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
1917 page_size = PE_DEF_FILE_ALIGNMENT;
1919 #ifdef COFF_PAGE_SIZE
1920 int page_size = COFF_PAGE_SIZE;
1924 if (bfd_get_start_address (abfd))
1926 /* A start address may have been added to the original file. In this
1927 case it will need an optional header to record it. */
1928 abfd->flags |= EXEC_P;
1931 if (abfd->flags & EXEC_P)
1934 else if (xcoff_data (abfd)->full_aouthdr)
1937 sofar += SMALL_AOUTSZ;
1940 sofar += abfd->section_count * SCNHSZ;
1943 /* XCOFF handles overflows in the reloc and line number count fields
1944 by allocating a new section header to hold the correct counts. */
1945 for (current = abfd->sections; current != NULL; current = current->next)
1946 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
1950 for (current = abfd->sections, count = 1;
1951 current != (asection *) NULL;
1952 current = current->next, ++count)
1954 current->target_index = count;
1956 /* Only deal with sections which have contents */
1957 if (!(current->flags & SEC_HAS_CONTENTS))
1961 /* Do not include the .junk section. This is where we collect section
1962 data which we don't need. This is mainly the MS .debug$ data which
1963 stores codeview debug data. */
1964 if (strcmp (current->name, ".junk") == 0)
1970 /* Align the sections in the file to the same boundary on
1971 which they are aligned in virtual memory. I960 doesn't
1972 do this (FIXME) so we can stay in sync with Intel. 960
1973 doesn't yet page from files... */
1975 if ((abfd->flags & EXEC_P) != 0)
1977 /* make sure this section is aligned on the right boundary - by
1978 padding the previous section up if necessary */
1981 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
1982 if (previous != (asection *) NULL)
1984 previous->_raw_size += sofar - old_sofar;
1990 /* In demand paged files the low order bits of the file offset
1991 must match the low order bits of the virtual address. */
1992 #ifdef COFF_PAGE_SIZE
1993 if ((abfd->flags & D_PAGED) != 0
1994 && (current->flags & SEC_ALLOC) != 0)
1995 sofar += (current->vma - sofar) % page_size;
1997 current->filepos = sofar;
1999 #ifdef COFF_IMAGE_WITH_PE
2000 /* With PE we have to pad each section to be a multiple of its page size
2001 too, and remember both sizes. Cooked_size becomes very useful. */
2002 current->_cooked_size = current->_raw_size;
2003 current->_raw_size = (current->_raw_size + page_size -1) & -page_size;
2006 sofar += current->_raw_size;
2009 /* make sure that this section is of the right size too */
2011 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
2012 current->_raw_size += sofar - old_sofar;
2016 /* Force .lib sections to start at zero. The vma is then
2017 incremented in coff_set_section_contents. This is right for
2019 if (strcmp (current->name, _LIB) == 0)
2020 bfd_set_section_vma (abfd, current, 0);
2026 obj_relocbase (abfd) = sofar;
2027 abfd->output_has_begun = true;
2031 #ifndef RS6000COFF_C
2033 /* If .file, .text, .data, .bss symbols are missing, add them. */
2034 /* @@ Should we only be adding missing symbols, or overriding the aux
2035 values for existing section symbols? */
2037 coff_add_missing_symbols (abfd)
2040 unsigned int nsyms = bfd_get_symcount (abfd);
2041 asymbol **sympp = abfd->outsymbols;
2044 int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
2046 for (i = 0; i < nsyms; i++)
2048 coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
2052 /* only do this if there is a coff representation of the input
2054 if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
2059 name = csym->symbol.name;
2062 if (!strcmp (name, _TEXT))
2065 else if (!strcmp (name, ".wtext"))
2068 else if (!strcmp (name, _DATA))
2070 else if (!strcmp (name, _BSS))
2074 /* Now i == bfd_get_symcount (abfd). */
2075 /* @@ For now, don't deal with .file symbol. */
2078 if (!need_text && !need_data && !need_bss && !need_file)
2080 nsyms += need_text + need_data + need_bss + need_file;
2081 sympp2 = (asymbol **) bfd_alloc_by_size_t (abfd, nsyms * sizeof (asymbol *));
2084 memcpy (sympp2, sympp, i * sizeof (asymbol *));
2087 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
2091 sympp2[i++] = coff_section_symbol (abfd, _TEXT);
2093 sympp2[i++] = coff_section_symbol (abfd, _DATA);
2095 sympp2[i++] = coff_section_symbol (abfd, _BSS);
2096 BFD_ASSERT (i == nsyms);
2097 bfd_set_symtab (abfd, sympp2, nsyms);
2101 #endif /* ! defined (RS6000COFF_C) */
2108 coff_write_object_contents (abfd)
2112 boolean hasrelocs = false;
2113 boolean haslinno = false;
2115 file_ptr reloc_base;
2116 file_ptr lineno_base;
2118 unsigned long reloc_size = 0;
2119 unsigned long lnno_size = 0;
2120 asection *text_sec = NULL;
2121 asection *data_sec = NULL;
2122 asection *bss_sec = NULL;
2124 struct internal_filehdr internal_f;
2125 struct internal_aouthdr internal_a;
2127 bfd_set_error (bfd_error_system_call);
2129 /* Make a pass through the symbol table to count line number entries and
2130 put them into the correct asections */
2132 lnno_size = coff_count_linenumbers (abfd) * LINESZ;
2134 if (abfd->output_has_begun == false)
2135 coff_compute_section_file_positions (abfd);
2137 reloc_base = obj_relocbase (abfd);
2139 /* Work out the size of the reloc and linno areas */
2141 for (current = abfd->sections; current != NULL; current =
2143 reloc_size += current->reloc_count * RELSZ;
2145 lineno_base = reloc_base + reloc_size;
2146 sym_base = lineno_base + lnno_size;
2148 /* Indicate in each section->line_filepos its actual file address */
2149 for (current = abfd->sections; current != NULL; current =
2152 if (current->lineno_count)
2154 current->line_filepos = lineno_base;
2155 current->moving_line_filepos = lineno_base;
2156 lineno_base += current->lineno_count * LINESZ;
2160 current->line_filepos = 0;
2162 if (current->reloc_count)
2164 current->rel_filepos = reloc_base;
2165 reloc_base += current->reloc_count * RELSZ;
2169 current->rel_filepos = 0;
2173 /* Write section headers to the file. */
2174 internal_f.f_nscns = 0;
2176 if ((abfd->flags & EXEC_P) != 0)
2177 scn_base = FILHSZ + AOUTSZ;
2182 if (xcoff_data (abfd)->full_aouthdr)
2185 scn_base += SMALL_AOUTSZ;
2189 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
2192 for (current = abfd->sections;
2194 current = current->next)
2196 struct internal_scnhdr section;
2199 /* Do not include the .junk section. This is where we collect section
2200 data which we don't need. This is mainly the MS .debug$ data which
2201 stores codeview debug data. */
2202 if (strcmp (current->name, ".junk") == 0)
2207 /* If we've got a .reloc section, remember. */
2209 #ifdef COFF_IMAGE_WITH_PE
2210 if (strcmp (current->name, ".reloc") == 0)
2212 pe_data (abfd)->has_reloc_section = 1;
2217 internal_f.f_nscns++;
2218 strncpy (&(section.s_name[0]), current->name, 8);
2220 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
2222 if (strcmp (current->name, _LIB) == 0)
2223 section.s_vaddr = 0;
2226 section.s_vaddr = current->lma;
2227 section.s_paddr = current->lma;
2228 section.s_size = current->_raw_size;
2231 section.s_paddr = current->_cooked_size;
2235 If this section has no size or is unloadable then the scnptr
2238 if (current->_raw_size == 0 ||
2239 (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2241 section.s_scnptr = 0;
2245 section.s_scnptr = current->filepos;
2247 section.s_relptr = current->rel_filepos;
2248 section.s_lnnoptr = current->line_filepos;
2249 section.s_nreloc = current->reloc_count;
2250 section.s_nlnno = current->lineno_count;
2251 if (current->reloc_count != 0)
2253 if (current->lineno_count != 0)
2257 /* Indicate the use of an XCOFF overflow section header. */
2258 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2260 section.s_nreloc = 0xffff;
2261 section.s_nlnno = 0xffff;
2265 section.s_flags = sec_to_styp_flags (current->name, current->flags);
2267 if (!strcmp (current->name, _TEXT))
2271 else if (!strcmp (current->name, _DATA))
2275 else if (!strcmp (current->name, _BSS))
2281 section.s_align = (current->alignment_power
2282 ? 1 << current->alignment_power
2287 #ifdef COFF_IMAGE_WITH_PE
2288 /* suppress output of the sections if they are null. ld includes
2289 the bss and data sections even if there is no size assigned
2290 to them. NT loader doesn't like it if these section headers are
2291 included if the sections themselves are not needed */
2292 if (section.s_size == 0)
2293 internal_f.f_nscns--;
2298 if (coff_swap_scnhdr_out (abfd, §ion, &buff) == 0
2299 || bfd_write ((PTR) (&buff), 1, SCNHSZ, abfd) != SCNHSZ)
2305 /* XCOFF handles overflows in the reloc and line number count fields
2306 by creating a new section header to hold the correct values. */
2307 for (current = abfd->sections; current != NULL; current = current->next)
2309 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2311 struct internal_scnhdr scnhdr;
2314 internal_f.f_nscns++;
2315 strncpy (&(scnhdr.s_name[0]), current->name, 8);
2316 scnhdr.s_paddr = current->reloc_count;
2317 scnhdr.s_vaddr = current->lineno_count;
2319 scnhdr.s_scnptr = 0;
2320 scnhdr.s_relptr = current->rel_filepos;
2321 scnhdr.s_lnnoptr = current->line_filepos;
2322 scnhdr.s_nreloc = current->target_index;
2323 scnhdr.s_nlnno = current->target_index;
2324 scnhdr.s_flags = STYP_OVRFLO;
2325 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
2326 || bfd_write ((PTR) &buff, 1, SCNHSZ, abfd) != SCNHSZ)
2332 /* OK, now set up the filehdr... */
2334 /* Don't include the internal abs section in the section count */
2337 We will NOT put a fucking timestamp in the header here. Every time you
2338 put it back, I will come in and take it out again. I'm sorry. This
2339 field does not belong here. We fill it with a 0 so it compares the
2342 internal_f.f_timdat = 0;
2344 internal_f.f_flags = 0;
2346 if (abfd->flags & EXEC_P)
2347 internal_f.f_opthdr = AOUTSZ;
2350 internal_f.f_opthdr = 0;
2352 if (xcoff_data (abfd)->full_aouthdr)
2353 internal_f.f_opthdr = AOUTSZ;
2355 internal_f.f_opthdr = SMALL_AOUTSZ;
2360 internal_f.f_flags |= F_RELFLG;
2362 internal_f.f_flags |= F_LNNO;
2363 if (abfd->flags & EXEC_P)
2364 internal_f.f_flags |= F_EXEC;
2366 /* FIXME: this is wrong for PPC_PE! */
2367 if (!abfd->xvec->byteorder_big_p)
2368 internal_f.f_flags |= F_AR32WR;
2370 internal_f.f_flags |= F_AR32W;
2373 FIXME, should do something about the other byte orders and
2378 if ((abfd->flags & DYNAMIC) != 0)
2379 internal_f.f_flags |= F_SHROBJ;
2380 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
2381 internal_f.f_flags |= F_DYNLOAD;
2384 memset (&internal_a, 0, sizeof internal_a);
2386 /* Set up architecture-dependent stuff */
2389 unsigned int magic = 0;
2390 unsigned short flags = 0;
2391 coff_set_flags (abfd, &magic, &flags);
2392 internal_f.f_magic = magic;
2393 internal_f.f_flags |= flags;
2394 /* ...and the "opt"hdr... */
2397 #ifdef ULTRA3 /* NYU's machine */
2398 /* FIXME: This is a bogus check. I really want to see if there
2399 * is a .shbss or a .shdata section, if so then set the magic
2400 * number to indicate a shared data executable.
2402 if (internal_f.f_nscns >= 7)
2403 internal_a.magic = SHMAGIC; /* Shared magic */
2406 internal_a.magic = NMAGIC; /* Assume separate i/d */
2407 #define __A_MAGIC_SET__
2410 /* FIXME: What are the a.out magic numbers for the i860? */
2411 internal_a.magic = 0;
2412 #define __A_MAGIC_SET__
2415 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
2416 #define __A_MAGIC_SET__
2419 #define __A_MAGIC_SET__
2420 internal_a.magic = PAGEMAGICBCS;
2424 #define __A_MAGIC_SET__
2425 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
2428 #if defined(M68) || defined(WE32K) || defined(M68K)
2429 #define __A_MAGIC_SET__
2431 internal_a.magic = LYNXCOFFMAGIC;
2433 #if defined (PAGEMAGICPEXECPAGED)
2434 internal_a.magic = PAGEMAGICPEXECPAGED;
2437 #endif /* M68 || WE32K || M68K */
2440 #define __A_MAGIC_SET__
2441 internal_a.magic = ZMAGIC;
2444 #define __A_MAGIC_SET__
2445 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
2448 #define __A_MAGIC_SET__
2450 internal_a.magic = LYNXCOFFMAGIC;
2452 internal_a.magic = ZMAGIC;
2457 #define __A_MAGIC_SET__
2459 internal_a.magic = LYNXCOFFMAGIC;
2464 #define __A_MAGIC_SET__
2465 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
2466 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
2467 RS6K_AOUTHDR_OMAGIC;
2470 #ifndef __A_MAGIC_SET__
2471 #include "Your aouthdr magic number is not being set!"
2473 #undef __A_MAGIC_SET__
2477 /* FIXME: Does anybody ever set this to another value? */
2478 internal_a.vstamp = 0;
2480 /* Now should write relocs, strings, syms */
2481 obj_sym_filepos (abfd) = sym_base;
2483 if (bfd_get_symcount (abfd) != 0)
2486 #ifndef RS6000COFF_C
2487 if (!coff_add_missing_symbols (abfd))
2490 if (!coff_renumber_symbols (abfd, &firstundef))
2492 coff_mangle_symbols (abfd);
2493 if (! coff_write_symbols (abfd))
2495 if (! coff_write_linenumbers (abfd))
2497 if (! coff_write_relocs (abfd, firstundef))
2500 #ifdef COFF_IMAGE_WITH_PE
2502 else if ((abfd->flags & EXEC_P) != 0)
2506 /* PowerPC PE appears to require that all executable files be
2507 rounded up to the page size. */
2510 BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
2512 || bfd_write (&b, 1, 1, abfd) != 1)
2518 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
2519 backend linker, and obj_raw_syment_count is not valid until after
2520 coff_write_symbols is called. */
2521 if (obj_raw_syment_count (abfd) != 0)
2523 internal_f.f_symptr = sym_base;
2525 /* AIX appears to require that F_RELFLG not be set if there are
2526 local symbols but no relocations. */
2527 internal_f.f_flags &=~ F_RELFLG;
2532 internal_f.f_symptr = 0;
2533 internal_f.f_flags |= F_LSYMS;
2538 internal_a.tsize = bfd_get_section_size_before_reloc (text_sec);
2539 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
2543 internal_a.dsize = bfd_get_section_size_before_reloc (data_sec);
2544 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
2548 internal_a.bsize = bfd_get_section_size_before_reloc (bss_sec);
2549 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
2550 internal_a.data_start = bss_sec->vma;
2553 internal_a.entry = bfd_get_start_address (abfd);
2554 internal_f.f_nsyms = obj_raw_syment_count (abfd);
2557 if (xcoff_data (abfd)->full_aouthdr)
2560 asection *loader_sec;
2562 internal_a.vstamp = 1;
2564 if (xcoff_data (abfd)->entry_section != NULL)
2565 internal_a.o_snentry = xcoff_data (abfd)->entry_section->target_index;
2568 internal_a.o_snentry = 0;
2569 if (internal_a.entry == 0)
2570 internal_a.entry = (bfd_vma) -1;
2573 if (text_sec != NULL)
2575 internal_a.o_sntext = text_sec->target_index;
2576 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
2580 internal_a.o_sntext = 0;
2581 internal_a.o_algntext = 0;
2583 if (data_sec != NULL)
2585 internal_a.o_sndata = data_sec->target_index;
2586 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
2590 internal_a.o_sndata = 0;
2591 internal_a.o_algndata = 0;
2593 loader_sec = bfd_get_section_by_name (abfd, ".loader");
2594 if (loader_sec != NULL)
2595 internal_a.o_snloader = loader_sec->target_index;
2597 internal_a.o_snloader = 0;
2598 if (bss_sec != NULL)
2599 internal_a.o_snbss = bss_sec->target_index;
2601 internal_a.o_snbss = 0;
2603 toc = xcoff_data (abfd)->toc;
2604 internal_a.o_toc = toc;
2605 if (xcoff_data (abfd)->toc_section == NULL)
2606 internal_a.o_sntoc = 0;
2608 internal_a.o_sntoc = xcoff_data (abfd)->toc_section->target_index;
2610 internal_a.o_modtype = xcoff_data (abfd)->modtype;
2611 if (xcoff_data (abfd)->cputype != -1)
2612 internal_a.o_cputype = xcoff_data (abfd)->cputype;
2615 switch (bfd_get_arch (abfd))
2617 case bfd_arch_rs6000:
2618 internal_a.o_cputype = 4;
2620 case bfd_arch_powerpc:
2621 if (bfd_get_mach (abfd) == 0)
2622 internal_a.o_cputype = 3;
2624 internal_a.o_cputype = 1;
2630 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
2631 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
2635 /* now write them */
2636 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
2640 coff_swap_filehdr_out (abfd, (PTR) & internal_f, (PTR) & buff);
2641 if (bfd_write ((PTR) & buff, 1, FILHSZ, abfd) != FILHSZ)
2644 if (abfd->flags & EXEC_P)
2647 coff_swap_aouthdr_out (abfd, (PTR) & internal_a, (PTR) & buff);
2648 if (bfd_write ((PTR) & buff, 1, AOUTSZ, abfd) != AOUTSZ)
2657 /* XCOFF seems to always write at least a small a.out header. */
2658 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) &buff);
2659 if (xcoff_data (abfd)->full_aouthdr)
2662 size = SMALL_AOUTSZ;
2663 if (bfd_write ((PTR) &buff, 1, size, abfd) != size)
2672 coff_set_section_contents (abfd, section, location, offset, count)
2677 bfd_size_type count;
2679 if (abfd->output_has_begun == false) /* set by bfd.c handler */
2680 coff_compute_section_file_positions (abfd);
2683 /* If this is a .lib section, bump the vma address so that it
2684 winds up being the number of .lib sections output. This is
2685 right for SVR3.2. Shared libraries should probably get more
2687 if (strcmp (section->name, _LIB) == 0)
2691 /* Don't write out bss sections - one way to do this is to
2692 see if the filepos has not been set. */
2693 if (section->filepos == 0)
2696 if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0)
2701 return (bfd_write (location, 1, count, abfd) == count) ? true : false;
2707 coff_close_and_cleanup (abfd)
2710 if (!bfd_read_p (abfd))
2711 switch (abfd->format)
2714 if (!_bfd_write_archive_contents (abfd))
2718 if (!coff_write_object_contents (abfd))
2722 bfd_set_error (bfd_error_invalid_operation);
2726 /* We depend on bfd_close to free all the memory on the obstack. */
2727 /* FIXME if bfd_release is not using obstacks! */
2734 buy_and_read (abfd, where, seek_direction, size)
2740 PTR area = (PTR) bfd_alloc (abfd, size);
2743 if (bfd_seek (abfd, where, seek_direction) != 0
2744 || bfd_read (area, 1, size, abfd) != size)
2747 } /* buy_and_read() */
2753 Creating the linenumber table is done by reading in the entire
2754 coff linenumber table, and creating another table for internal use.
2756 A coff linenumber table is structured so that each function
2757 is marked as having a line number of 0. Each line within the
2758 function is an offset from the first line in the function. The
2759 base of the line number information for the table is stored in
2760 the symbol associated with the function.
2762 The information is copied from the external to the internal
2763 table, and each symbol which marks a function is marked by
2766 How does this work ?
2771 coff_slurp_line_table (abfd, asect)
2775 LINENO *native_lineno;
2776 alent *lineno_cache;
2778 BFD_ASSERT (asect->lineno == (alent *) NULL);
2780 native_lineno = (LINENO *) buy_and_read (abfd,
2781 asect->line_filepos,
2784 asect->lineno_count));
2786 (alent *) bfd_alloc (abfd, (size_t) ((asect->lineno_count + 1) * sizeof (alent)));
2787 if (lineno_cache == NULL)
2791 unsigned int counter = 0;
2792 alent *cache_ptr = lineno_cache;
2793 LINENO *src = native_lineno;
2795 while (counter < asect->lineno_count)
2797 struct internal_lineno dst;
2798 coff_swap_lineno_in (abfd, src, &dst);
2799 cache_ptr->line_number = dst.l_lnno;
2801 if (cache_ptr->line_number == 0)
2803 coff_symbol_type *sym =
2804 (coff_symbol_type *) (dst.l_addr.l_symndx
2805 + obj_raw_syments (abfd))->u.syment._n._n_n._n_zeroes;
2806 cache_ptr->u.sym = (asymbol *) sym;
2807 if (sym->lineno != NULL)
2809 (*_bfd_error_handler)
2810 ("%s: warning: duplicate line number information for `%s'",
2811 bfd_get_filename (abfd),
2812 bfd_asymbol_name (&sym->symbol));
2814 sym->lineno = cache_ptr;
2818 cache_ptr->u.offset = dst.l_addr.l_paddr
2819 - bfd_section_vma (abfd, asect);
2820 } /* If no linenumber expect a symbol index */
2826 cache_ptr->line_number = 0;
2829 asect->lineno = lineno_cache;
2830 /* FIXME, free native_lineno here, or use alloca or something. */
2835 coff_slurp_symbol_table (abfd)
2838 combined_entry_type *native_symbols;
2839 coff_symbol_type *cached_area;
2840 unsigned int *table_ptr;
2842 unsigned int number_of_symbols = 0;
2844 if (obj_symbols (abfd))
2847 /* Read in the symbol table */
2848 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
2853 /* Allocate enough room for all the symbols in cached form */
2854 cached_area = ((coff_symbol_type *)
2856 (obj_raw_syment_count (abfd)
2857 * sizeof (coff_symbol_type))));
2859 if (cached_area == NULL)
2861 table_ptr = ((unsigned int *)
2863 (obj_raw_syment_count (abfd)
2864 * sizeof (unsigned int))));
2866 if (table_ptr == NULL)
2870 coff_symbol_type *dst = cached_area;
2871 unsigned int last_native_index = obj_raw_syment_count (abfd);
2872 unsigned int this_index = 0;
2873 while (this_index < last_native_index)
2875 combined_entry_type *src = native_symbols + this_index;
2876 table_ptr[this_index] = number_of_symbols;
2877 dst->symbol.the_bfd = abfd;
2879 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
2880 /* We use the native name field to point to the cached field. */
2881 src->u.syment._n._n_n._n_zeroes = (long) dst;
2882 dst->symbol.section = coff_section_from_bfd_index (abfd,
2883 src->u.syment.n_scnum);
2884 dst->symbol.flags = 0;
2885 dst->done_lineno = false;
2887 switch (src->u.syment.n_sclass)
2892 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
2893 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
2894 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
2896 /* Fall through to next case */
2905 /* PE uses storage class 0x68 to denote a section symbol */
2907 /* PE uses storage class 0x67 for a weak external symbol. */
2910 if ((src->u.syment.n_scnum) == 0)
2912 if ((src->u.syment.n_value) == 0)
2914 dst->symbol.section = bfd_und_section_ptr;
2915 dst->symbol.value = 0;
2919 dst->symbol.section = bfd_com_section_ptr;
2920 dst->symbol.value = (src->u.syment.n_value);
2925 /* Base the value as an index from the base of the
2928 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
2929 dst->symbol.value = (src->u.syment.n_value
2930 - dst->symbol.section->vma);
2932 if (ISFCN ((src->u.syment.n_type)))
2934 /* A function ext does not go at the end of a
2936 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
2941 /* A C_HIDEXT symbol is not global. */
2942 if (src->u.syment.n_sclass == C_HIDEXT)
2943 dst->symbol.flags = BSF_LOCAL;
2944 /* A symbol with a csect entry should not go at the end. */
2945 if (src->u.syment.n_numaux > 0)
2946 dst->symbol.flags |= BSF_NOT_AT_END;
2950 if (src->u.syment.n_sclass == C_NT_WEAK)
2951 dst->symbol.flags = BSF_WEAK;
2956 case C_STAT: /* static */
2958 case C_LEAFSTAT: /* static leaf procedure */
2960 case C_LABEL: /* label */
2961 if (src->u.syment.n_scnum == -2)
2962 dst->symbol.flags = BSF_DEBUGGING;
2964 dst->symbol.flags = BSF_LOCAL;
2966 Base the value as an index from the base of the section, if
2969 if (dst->symbol.section)
2970 dst->symbol.value = (src->u.syment.n_value) -
2971 dst->symbol.section->vma;
2973 dst->symbol.value = (src->u.syment.n_value);
2976 case C_MOS: /* member of structure */
2977 case C_EOS: /* end of structure */
2978 #ifdef NOTDEF /* C_AUTOARG has the same value */
2980 case C_GLBLREG: /* A29k-specific storage class */
2983 case C_REGPARM: /* register parameter */
2984 case C_REG: /* register variable */
2986 case C_AUTOARG: /* 960-specific storage class */
2988 case C_TPDEF: /* type definition */
2990 case C_AUTO: /* automatic variable */
2991 case C_FIELD: /* bit field */
2992 case C_ENTAG: /* enumeration tag */
2993 case C_MOE: /* member of enumeration */
2994 case C_MOU: /* member of union */
2995 case C_UNTAG: /* union tag */
2996 dst->symbol.flags = BSF_DEBUGGING;
2997 dst->symbol.value = (src->u.syment.n_value);
3000 case C_FILE: /* file name */
3001 case C_STRTAG: /* structure tag */
3016 dst->symbol.flags = BSF_DEBUGGING;
3017 dst->symbol.value = (src->u.syment.n_value);
3021 case C_BINCL: /* beginning of include file */
3022 case C_EINCL: /* ending of include file */
3023 /* The value is actually a pointer into the line numbers
3024 of the file. We locate the line number entry, and
3025 set the section to the section which contains it, and
3026 the value to the index in that section. */
3030 dst->symbol.flags = BSF_DEBUGGING;
3031 for (sec = abfd->sections; sec != NULL; sec = sec->next)
3032 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
3033 && ((file_ptr) (sec->line_filepos
3034 + sec->lineno_count * LINESZ)
3035 > (file_ptr) src->u.syment.n_value))
3038 dst->symbol.value = 0;
3041 dst->symbol.section = sec;
3042 dst->symbol.value = ((src->u.syment.n_value
3043 - sec->line_filepos)
3051 dst->symbol.flags = BSF_DEBUGGING;
3053 /* The value is actually a symbol index. Save a pointer
3054 to the symbol instead of the index. FIXME: This
3055 should use a union. */
3056 src->u.syment.n_value =
3057 (long) (native_symbols + src->u.syment.n_value);
3058 dst->symbol.value = src->u.syment.n_value;
3063 case C_BLOCK: /* ".bb" or ".eb" */
3064 case C_FCN: /* ".bf" or ".ef" */
3065 case C_EFCN: /* physical end of function */
3066 dst->symbol.flags = BSF_LOCAL;
3068 Base the value as an index from the base of the section
3070 dst->symbol.value = (src->u.syment.n_value) - dst->symbol.section->vma;
3074 case C_EXTDEF: /* external definition */
3075 case C_ULABEL: /* undefined label */
3076 case C_USTATIC: /* undefined static */
3077 #ifndef COFF_WITH_PE
3078 /* C_LINE in regular coff is 0x68. NT has taken over this storage
3079 class to represent a section symbol */
3080 case C_LINE: /* line # reformatted as symbol table entry */
3081 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
3082 case C_ALIAS: /* duplicate tag */
3084 case C_HIDDEN: /* ext symbol in dmert public lib */
3086 (*_bfd_error_handler)
3087 ("%s: Unrecognized storage class %d for %s symbol `%s'",
3088 bfd_get_filename (abfd), src->u.syment.n_sclass,
3089 dst->symbol.section->name, dst->symbol.name);
3090 dst->symbol.flags = BSF_DEBUGGING;
3091 dst->symbol.value = (src->u.syment.n_value);
3095 /* BFD_ASSERT(dst->symbol.flags != 0);*/
3099 dst->symbol.udata.i = 0;
3100 dst->lineno = (alent *) NULL;
3101 this_index += (src->u.syment.n_numaux) + 1;
3103 number_of_symbols++;
3104 } /* walk the native symtab */
3105 } /* bfdize the native symtab */
3107 obj_symbols (abfd) = cached_area;
3108 obj_raw_syments (abfd) = native_symbols;
3110 bfd_get_symcount (abfd) = number_of_symbols;
3111 obj_convert (abfd) = table_ptr;
3112 /* Slurp the line tables for each section too */
3118 coff_slurp_line_table (abfd, p);
3123 } /* coff_slurp_symbol_table() */
3125 /* Check whether a symbol is globally visible. This is used by the
3126 COFF backend linker code in cofflink.c, since a couple of targets
3127 have globally visible symbols which are not class C_EXT. This
3128 function need not handle the case of n_class == C_EXT. */
3130 #undef OTHER_GLOBAL_CLASS
3133 #define OTHER_GLOBAL_CLASS C_LEAFEXT
3137 #define OTHER_GLOBAL_CLASS C_SECTION
3140 #ifdef OTHER_GLOBAL_CLASS
3143 coff_sym_is_global (abfd, syment)
3145 struct internal_syment *syment;
3147 if (syment->n_sclass == OTHER_GLOBAL_CLASS)
3152 #undef OTHER_GLOBAL_CLASS
3154 #else /* ! defined (OTHER_GLOBAL_CLASS) */
3156 /* sym_is_global should not be defined if it has nothing to do. */
3158 #define coff_sym_is_global 0
3160 #endif /* ! defined (OTHER_GLOBAL_CLASS) */
3166 Coff relocations are easily transformed into the internal BFD form
3169 Reading a coff relocation table is done in the following stages:
3171 o Read the entire coff relocation table into memory.
3173 o Process each relocation in turn; first swap it from the
3174 external to the internal form.
3176 o Turn the symbol referenced in the relocation's symbol index
3177 into a pointer into the canonical symbol table.
3178 This table is the same as the one returned by a call to
3179 @code{bfd_canonicalize_symtab}. The back end will call that
3180 routine and save the result if a canonicalization hasn't been done.
3182 o The reloc index is turned into a pointer to a howto
3183 structure, in a back end specific way. For instance, the 386
3184 and 960 use the @code{r_type} to directly produce an index
3185 into a howto table vector; the 88k subtracts a number from the
3186 @code{r_type} field and creates an addend field.
3192 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
3194 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
3195 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
3196 coffsym = (obj_symbols (abfd) \
3197 + (cache_ptr->sym_ptr_ptr - symbols)); \
3199 coffsym = coff_symbol_from (abfd, ptr); \
3200 if (coffsym != (coff_symbol_type *) NULL \
3201 && coffsym->native->u.syment.n_scnum == 0) \
3202 cache_ptr->addend = 0; \
3203 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
3204 && ptr->section != (asection *) NULL) \
3205 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
3207 cache_ptr->addend = 0; \
3212 coff_slurp_reloc_table (abfd, asect, symbols)
3217 RELOC *native_relocs;
3218 arelent *reloc_cache;
3223 if (asect->relocation)
3225 if (asect->reloc_count == 0)
3227 if (asect->flags & SEC_CONSTRUCTOR)
3229 if (!coff_slurp_symbol_table (abfd))
3232 (RELOC *) buy_and_read (abfd,
3236 asect->reloc_count));
3237 reloc_cache = (arelent *)
3238 bfd_alloc (abfd, (size_t) (asect->reloc_count * sizeof (arelent)));
3240 if (reloc_cache == NULL)
3244 for (idx = 0; idx < asect->reloc_count; idx++)
3246 #ifdef RELOC_PROCESSING
3247 struct internal_reloc dst;
3248 struct external_reloc *src;
3250 cache_ptr = reloc_cache + idx;
3251 src = native_relocs + idx;
3252 coff_swap_reloc_in (abfd, src, &dst);
3254 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
3256 struct internal_reloc dst;
3258 struct external_reloc *src;
3260 cache_ptr = reloc_cache + idx;
3261 src = native_relocs + idx;
3263 coff_swap_reloc_in (abfd, src, &dst);
3266 cache_ptr->address = dst.r_vaddr;
3268 if (dst.r_symndx != -1)
3270 /* @@ Should never be greater than count of symbols! */
3271 if (dst.r_symndx >= obj_conv_table_size (abfd))
3273 cache_ptr->sym_ptr_ptr = symbols + obj_convert (abfd)[dst.r_symndx];
3274 ptr = *(cache_ptr->sym_ptr_ptr);
3278 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
3282 /* The symbols definitions that we have read in have been
3283 relocated as if their sections started at 0. But the offsets
3284 refering to the symbols in the raw data have not been
3285 modified, so we have to have a negative addend to compensate.
3287 Note that symbols which used to be common must be left alone */
3289 /* Calculate any reloc addend by looking at the symbol */
3290 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
3292 cache_ptr->address -= asect->vma;
3293 /* !! cache_ptr->section = (asection *) NULL;*/
3295 /* Fill in the cache_ptr->howto field from dst.r_type */
3296 RTYPE2HOWTO (cache_ptr, &dst);
3301 asect->relocation = reloc_cache;
3305 #ifndef coff_rtype_to_howto
3308 /* Get the howto structure for a reloc. This is only used if the file
3309 including this one defines coff_relocate_section to be
3310 _bfd_coff_generic_relocate_section, so it is OK if it does not
3311 always work. It is the responsibility of the including file to
3312 make sure it is reasonable if it is needed. */
3314 static reloc_howto_type *coff_rtype_to_howto
3315 PARAMS ((bfd *, asection *, struct internal_reloc *,
3316 struct coff_link_hash_entry *, struct internal_syment *,
3320 static reloc_howto_type *
3321 coff_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
3324 struct internal_reloc *rel;
3325 struct coff_link_hash_entry *h;
3326 struct internal_syment *sym;
3331 RTYPE2HOWTO (&genrel, rel);
3332 return genrel.howto;
3335 #else /* ! defined (RTYPE2HOWTO) */
3337 #define coff_rtype_to_howto NULL
3339 #endif /* ! defined (RTYPE2HOWTO) */
3340 #endif /* ! defined (coff_rtype_to_howto) */
3342 /* This is stupid. This function should be a boolean predicate. */
3344 coff_canonicalize_reloc (abfd, section, relptr, symbols)
3350 arelent *tblptr = section->relocation;
3351 unsigned int count = 0;
3354 if (section->flags & SEC_CONSTRUCTOR)
3356 /* this section has relocs made up by us, they are not in the
3357 file, so take them out of their chain and place them into
3358 the data area provided */
3359 arelent_chain *chain = section->constructor_chain;
3360 for (count = 0; count < section->reloc_count; count++)
3362 *relptr++ = &chain->relent;
3363 chain = chain->next;
3369 if (! coff_slurp_reloc_table (abfd, section, symbols))
3372 tblptr = section->relocation;
3374 for (; count++ < section->reloc_count;)
3375 *relptr++ = tblptr++;
3380 return section->reloc_count;
3385 coff_sym_filepos (abfd)
3388 return obj_sym_filepos (abfd);
3392 #ifndef coff_reloc16_estimate
3393 #define coff_reloc16_estimate dummy_reloc16_estimate
3396 dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
3398 asection *input_section;
3400 unsigned int shrink;
3401 struct bfd_link_info *link_info;
3408 #ifndef coff_reloc16_extra_cases
3409 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
3410 /* This works even if abort is not declared in any header file. */
3412 dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
3415 struct bfd_link_info *link_info;
3416 struct bfd_link_order *link_order;
3419 unsigned int *src_ptr;
3420 unsigned int *dst_ptr;
3426 /* If coff_relocate_section is defined, we can use the optimized COFF
3427 backend linker. Otherwise we must continue to use the old linker. */
3428 #ifdef coff_relocate_section
3429 #ifndef coff_bfd_link_hash_table_create
3430 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
3432 #ifndef coff_bfd_link_add_symbols
3433 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
3435 #ifndef coff_bfd_final_link
3436 #define coff_bfd_final_link _bfd_coff_final_link
3438 #else /* ! defined (coff_relocate_section) */
3439 #define coff_relocate_section NULL
3440 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
3441 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
3442 #define coff_bfd_final_link _bfd_generic_final_link
3443 #endif /* ! defined (coff_relocate_section) */
3444 #define coff_bfd_link_split_section _bfd_generic_link_split_section
3446 #ifndef coff_start_final_link
3447 #define coff_start_final_link NULL
3450 #ifndef coff_adjust_symndx
3451 #define coff_adjust_symndx NULL
3454 static CONST bfd_coff_backend_data bfd_coff_std_swap_table =
3456 coff_swap_aux_in, coff_swap_sym_in, coff_swap_lineno_in,
3457 coff_swap_aux_out, coff_swap_sym_out,
3458 coff_swap_lineno_out, coff_swap_reloc_out,
3459 coff_swap_filehdr_out, coff_swap_aouthdr_out,
3460 coff_swap_scnhdr_out,
3461 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ,
3462 #ifdef COFF_LONG_FILENAMES
3467 coff_swap_filehdr_in, coff_swap_aouthdr_in, coff_swap_scnhdr_in,
3468 coff_swap_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
3469 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
3470 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
3471 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
3472 coff_sym_is_global, coff_compute_section_file_positions,
3473 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
3477 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
3478 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
3479 #define coff_get_section_contents _bfd_generic_get_section_contents
3481 #ifndef coff_bfd_copy_private_symbol_data
3482 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
3485 #ifndef coff_bfd_copy_private_section_data
3486 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
3489 #ifndef coff_bfd_copy_private_bfd_data
3490 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
3493 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
3494 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
3496 #ifndef coff_bfd_print_private_bfd_data
3497 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
3500 #ifndef coff_bfd_is_local_label
3501 #define coff_bfd_is_local_label bfd_generic_is_local_label
3503 #ifndef coff_read_minisymbols
3504 #define coff_read_minisymbols _bfd_generic_read_minisymbols
3506 #ifndef coff_minisymbol_to_symbol
3507 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
3510 /* The reloc lookup routine must be supplied by each individual COFF
3512 #ifndef coff_bfd_reloc_type_lookup
3513 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
3516 #ifndef coff_bfd_get_relocated_section_contents
3517 #define coff_bfd_get_relocated_section_contents \
3518 bfd_generic_get_relocated_section_contents
3520 #ifndef coff_bfd_relax_section
3521 #define coff_bfd_relax_section bfd_generic_relax_section